You could add an event to the calendar and
have it send a notice at the scheduled time, but it would be
visible on the calendar before then.
Following this option, I wouldn't be able to create a poll, for
example, isn't it?
Actually, I forgot this detail. I want to schedule a poll, not a
simple post :) my bad, I should've added it.
You could also add a hashtag that is
moderated so that the post would need to be approved (at the
appropriate time) before posting
Hmmm, interesting. In this case, I would have to aprove my own
message, when I want it to be sent? Also, looks like this option
will only work in a period within 14 days, because if I'm not
going wrong, this is the max time for holding a message needing
aproval.